Universal Audio Apollo Solo Thunderbolt 3 Audio Interface

Put Universal Audio's industry-leading recording tools on your desktop. This Thunderbolt 3 interface gives you two Unison preamps and a UAD-2 SOLO processor.

Shape your recordings into records with genuine UA conversion, classic mixing tools, and the LUNA Recording System. Featuring class-leading Universal Audio conversion, two Unison mic preamps, and a suite of built-in effects, Apollo Solo puts album-quality recording on your desktop. This 2 x 4, Thunderbolt 3, bus-powered audio interface for Mac and Windows includes a generous collection of UAD plug-ins to record vocals and instruments through, at near-zero latency -- plus it offers full integration with Universal Audio's groundbreaking LUNA Recording System.

Get a closer look at the Apollo Solo in this one-minute overview from UA:

Unison Technology for Stunning Mic and Guitar Preamp Emulations

Apollo Solo's Unison technology gives you the tone, touch and "feel" of the world's most sought-after tube and transformer-based mic preamps and guitar amps. It includes the UA 610-B Tube Preamp, Marshall Plexi Classic Amplifier, and Ampeg SVT-VR Classic Bass Amp plug-ins -- and can be expanded with exclusive titles from Neve, Avalon, SSL, Fender, and more. The secret is a unique hardware-software integration, which adjusts the impedance of Apollo's instrument and mic preamps to match the emulated hardware -- for authentic analog sound unmatched by other recording interfaces.

Realtime UAD Plug-In Processing for Recording with Near-Zero Latency

Derived from Universal Audio's award-winning Apollo interfaces, Apollo Solo opens up a range of classic analog color via its Realtime read more UAD Processing. Featuring an onboard UAD-2 SOLO Core processor, Apollo Solo lets you monitor and record through the full library of UAD Powered Plug-Ins -- at near-zero latency, regardless of your audio software buffer setting. It's like having a virtual analog studio that fits in a laptop bag.

The UAD library features more than 100 titles and offers everything from classic Moog filters to Ampex tape to Lexicon reverbs -- with more being added every few months. These are the exact same UAD plug-ins used on hit records by Billie Eilish, Kendrick Lamar, Dr. Dre, Foo Fighters, and many more.

LUNA Recording System with Accelerated Realtime Monitoring

Apollo Solo works with all major DAWs, including Logic Pro, Ableton Live, Pro Tools and more. But it becomes a fully integrated recording system with LUNA, a powerful free recording application for Mac from Universal Audio. Bolstered by Accelerated Realtime Monitoring,(TM) LUNA lets you track and mix in an intuitive single-window workflow with unlimited track counts, full AU support, and access to a suite of exclusive LUNA Instruments and Extensions.

From integrated Studer multitrack tape and built-in Neve Summing, to instruments from Moog and more, LUNA transforms Apollo Solo into an incredibly inspiring music creation platform.

Built for Musicians, Electronic Producers, and Songwriters

Apollo Solo's portable Thunderbolt 3 bus-powered design, robust all-metal construction, best-in-class headphone amplifier, and superior audio conversion is perfect for musicians, songwriters, and electronic music producers who need UA quality in a compact package.


- Desktop 2 x 4 Thunderbolt 3-powered audio interface with class-leading 24-bit/192 kHz audio conversion
- Unison mic preamp and guitar amp emulations from Neve, API, Avalon, Manley, Marshall, Fender, and more
- Realtime UAD Processing allows near-zero latency tracking with classic UAD plug-in effects, regardless of software buffer setting
- Produce with LUNA Recording System -- a free, fully-integrated recording application made for Apollo (Mac/Thunderbolt-only)
- Includes studio compressors, EQs, reverbs, and guitar amp emulations, and more as part of "Realtime Analog Classics" bundle
- Best-in-class headphone amplifier for loud, detailed, low-noise monitoring
- Bus-powered connection to Mac and Windows systems for easy portability and reduced cable clutter

Apollo Solo includes LUNA Recording System (Mac/Thunderbolt), plus the "Realtime Analog Classics" UAD Powered Plug-Ins Bundle:
- UA 610-B Tube Preamp and EQ
- Marshall Plexi Classic Guitar Amp
- Ampeg SVT-VR Classic Bass Amp
- Raw Distortion Guitar Pedal
- Teletronix LA-2A Compressor Legacy
- UA 1176LN Compressor Legacy
- UA 1176SE Compressor Legacy
- Pultec EQP-1A EQ Legacy
- Pultec Pro EQ Legacy
- Precision Delay Modulation
- Precision Delay Modulation L
- Precision Reflection Engine
- Precision Channel Strip
- Realverb Pro

Heritage Edition includes 5 additional plug-in collections:
- UA 1176 Collection
- Teletronix LA‑2A Classic Leveler Collection
- Pultec Passive EQ Collection
- UA 610 Tube Preamp & EQ Collection
- UA Pure Plate Reverb

All other UAD Powered Plug-Ins sold separately at www.uaudio.com. All trademarks are property of their respective owners.
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All specifications are typical performance unless otherwise noted, tested under the following conditions: 48 kHz internal sample rate, 24-bit sample depth, 20 kHz measurement bandwidth, with balanced inputs and outputs.


I/O Complement:
- Microphone Inputs: Two
- Analog Line Inputs: Two
- Hi-Z Instrument Inputs: One
- Analog Monitor Outputs: Two (one stereo pair)
- Headphone Outputs: One stereo
- Thunderbolt 3 Port: One

A/D – D/A Conversion:
- Supported Sample Rates (kHz): 44.1, 48, 88.2, 96, 176.4, 192
- Bit Depth Per Sample: 24
- Simultaneous A/D conversion: Two channels
- Simultaneous D/A conversion: Four channels
- Analog Round-Trip Latency: 1.1 milliseconds @ 96 kHz sample rate
- Analog Round-Trip Latency with up to five serial UAD Powered Plug-Ins via Console application: 1.1 milliseconds @ 96 kHz sample rate


Frequency Response: 20 Hz - 20 kHz, ±0.1 dB

Line Inputs 1 & 2:
- Connector Type: 1/4" Female TRS Balanced (Combo XLR/TRS)
- Dynamic Range: 118 dB (A–weighting)
- Total Harmonic Distortion + Noise: –107 dBFS
- Input Impedance: 10K Ohms (differential)
- Gain Range: +10 dB to +65 dB
- Maximum Input Level (600 Ohm source): +20.7 dBu

Microphone Inputs 1 & 2:
- Connector Type: XLR Female, pin 2 positive (Combo XLR/TRS)
- Phantom Power: +48V (switchable per mic input)
- Dynamic Range: 118 dB (A–weighting)
- Total Harmonic Distortion + Noise: -108 dBFS
- Default Input Impedance: 5.5K Ohms (variable via Unison plug-ins)
- Gain Range: +10 dB to +65 dB
- Pad Attenuation (switchable per input): 20 dB (variable via Unison plug-ins)
- Maximum Input Level: +25.2 dBu (minimum gain, pad engaged)

Hi-Z Instrument Input:
- Connector Type Female 1/4" TS Unbalanced
- Dynamic Range: 118 dB (A–weighting)
- Total Harmonic Distortion + Noise: -105 dBFS
- Input Impedance (variable via Unison plug-ins): 1M Ohms
- Gain Range: +10 dB to +65 dB
- Maximum Input Level (@ minimum gain): +12.5 dBu

Outputs 1 & 2:
- Connector Type: 1/4" Female TRS Balanced
- Output Impedance: 100 Ohms (differential)
- Dynamic Range: 115 dB (A–weighting)
- Total Harmonic Distortion + Noise: -106 dBFS
- Maximum Output Level: +20.7 dBu
- Operating Reference Level: +14 dBu, +20 dBu (selectable)

Stereo Headphones Output:
- Connector Type: 1/4" Female TRS Stereo
- Dynamic Range (A–weighting): 115 dB (600 Ohm load), 114 dB (32 Ohm load)
- Total Harmonic Distortion + Noise (A–weighting): -97 dB (600 Ohm load), -88 dB (32 Ohm load)
- Maximum Output Power: 62 mW (300 Ohm load), 240 mW (32 Ohm load)

- Power Supply: None (Bus powered via Thunderbolt 3)
- Maximum Power Consumption: 10 Watts

- Operating Temperature Range: 32 to 95 degrees Fahrenheit (0 to 35 degrees Celsius)
- Storage Temperature Range: -40 to 176 degrees Fahrenheit (-40 to 80 degrees Celsius)
- Operating Humidity Range: 20% to 80%


- Width: 7.1" (179.9 mm)
- Height (front): 1.0" (25.2 mm)
- Height (rear): 1.8" (46.7 mm)
- Depth: 4.8" (121.1 mm)
- Shipping Box (Length x Width x Height): 8.5 x 6.4 x 2.63 inches (216 x 162 x 68 mm)

- Weight (bare unit): 1.38 lbs (0.63 Kg)
- Shipping Weight (with box): 4 lbs (1.8 Kg)

Package Contents:
- Apollo Solo Thunderbolt 3 Bus Powered Audio Interface
- Getting Started URL Card
Dimensions and Weight in Packaging
Heritage Edition: Includes 5 extra UAD plug-in collections
Shipping Weight: 2.75 lbs
Shipping Dimensions: 9 x 7 x 5 in
Manufacturer Part Number (MPN): APLS-HE
Warehouse Resealed, Heritage Edition: Includes 5 extra UAD plug-in collections
Shipping Weight: 2.75 lbs
Shipping Dimensions: 9 x 7 x 5 in
Manufacturer Part Number (MPN): APLS-HE

For support or warranty questions, please contact the manufacturer:
Phone: 831-440-1176
Web: https://help.uaudio.com/

Reviewers gave this product an overall rating of 4 out of 5 stars. (1 ratings)
Submitted May 11, 2024 by a customer from gmail.com

"It’ll do"

Overall: 4 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
I’ve had this interface sicnce August of 2023. I had a Presonus 96, a Focusrite Scarlet 2i2 3gen, and SSL 2, I also had the Audient ID14 which is a quality interface but I wanted a more analog sound, and I wanted a sphere LX microphone and The LUNA software so withe Heritage bundle I basically bought plugin bundles and got a free interface. Now it is a noticeable improvement over the Presonus and Focusrite but not The SSL or the Audient. The set was a little complicated but the customer Support at universal audio is a one they may take awhile to respond initially but once they do they have solved every issue I had encountered. You have to buy a thunderbolt cable with it. Feature wise it’s got good features and it is built nice and sturdy. The stock preamps are nothing note worthy and the unison preamps are ok but you need a quality microphone and a hardware preamp to get a noticeable improvement. I think this thing is mainly for the plug-ins for someone who knows how to use them. It’s only compatible with Mac so if you use PC it won’t do you any good. It works great with a Mac though. Would I recommend? Not really I’m already trying to upgrade and It isn’t to a more expensive Apollo. Though I’m looking to spend the price of the next tier Apollo. If you like Apollo though it is a good bang for your buck but it’s not a game changer IMO maybe in the right hands.
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Heritage Edition: Includes 5 extra UAD plug-in collections

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Which Thunderbolt 3 cable do I need to connect Apollo Solo to my computer?
  • Apollo Solo is a Thunderbolt 3 device and requires a Thunderbolt 3 cable. Not all USB-C cables support Thunderbolt 3. Check out Universal Audio's FAQ here: Learn more »

5 Plug-in Collections Included with Heritage Edition:
  • UA 1176 Collection, Teletronix LA‑2A Classic Leveler Collection, Pultec Passive EQ Collection, UA 610 Tube Preamp & EQ Collection, UA Pure Plate Reverb